123156056 has 32 divisors (see below), whose sum is σ = 239047680. Its totient is φ = 59421600.

The previous prime is 123156049. The next prime is 123156071. The reversal of 123156056 is 650651321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156095 + ... + 156881.

It is an arithmetic number, because the mean of its divisors is an integer number (7470240).

Almost surely, 2^123156056 is an apocalyptic number.

It is an amenable number.

123156056 is a deficient number, since it is larger than the sum of its proper divisors (115891624).

123156056 is a wasteful number, since it uses less digits than its factorization.

123156056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1451 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 123156056 is about 11097.5698240651. The cubic root of 123156056 is about 497.5292185898.

The spelling of 123156056 in words is "one hundred twenty-three million, one hundred fifty-six thousand, fifty-six".